PHILADELPHIA (AP) — A former administrator in the Phoenixville School District has pleaded guilty to possession of child pornography.

The U.S. Attorney’s Office in Philadelphia says 42-year-old Troy Czukoski of Exton admitted in federal court Friday to possessing more than 150 images of children engaging in sex acts.

Czukoski planned to plead guilty to the charges in early April, but at the time federal Judge Legrome D. Davis said he believed Czukoski needed more time to consider his options, and rejected the plea.

At the time of the investigation, Czukoski was principal of Springton Lake Middle School in Delaware County. He has since resigned.

Federal authorities charged the former educator in March, several months after investigators found more than 150 pornographic images of minors on computer storage at Czukoski’s Exton home.

Czukoski previously worked as the principal at Phoenixville Middle School before being chosen to oversee the district’s virtual learning in February 2012.

Investigators from the U.S. Postal Service executed a search warrant at Czukoski’s home on Oct. 18 of last year and seized two flash drives, CDs and DVDs, according to the information charging Czukoski. An examination of that material allegedly revealed more than 150, but less than 300, visual depictions of minors engaging in sexually explicit conduct.

Czukoski faces up to 10 years in prison and a $250,000 fine. Judge Davis scheduled sentencing for Aug. 12.

Czukoski’s lawyer has previously said his client is a survivor of childhood sexual abuse.

Czukoski has 20 years of education experience, including earning his doctorate in educational philosophy. He served in the U.S. Army and the Pennsylvania National Guard.